Hello there! Digraphs are combinations of two letters that produce a single sound (phoneme). They can be consonant digraphs or vowel digraphs, producing a single consonant sound or a single vowel sound. They are extremely frequent in English, such as the words "phone" or "teacher", where "ph"/f/ only represents one sound (phoneme) or "ea"/i:/ only represents one sound (phoneme). Consonant digraphs: Ch → /tʃ/: Chair; Chore; Chain; Sh → /ʃ/: Shower; Shoe; Sheet; Th → /θ/: Think
